True/False
Indicate whether the sentence or statement is true
or false.
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1.
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It is
very easy to manipulate the water temperature.
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2.
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The
best place to measure DO in a trout raceway is in the middle.
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3.
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Ionized ammonia is less toxic than un-ionized ammonia.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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4.
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Trout
typically need water with DO levels higher than _______ ?
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5.
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Nitrosomonas and Nitrobacter oxidizes NH3 and NH4 to what final
product? a. | nitirite | c. | ammonia | b. | nitrate | d. | detritus | | | | |
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6.
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Which
of the following will work to precipitate silt and organic turbidity? a. | old
hay | c. | alum | e. | all of the
above | b. | gypsum | d. | lime | | | | | | |
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7.
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What
do grass carp control? a. | mosquitos | c. | vegetation | b. | native
fish | d. | detritus | | | | |
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Yes/No
Indicate whether you agree with the sentence or
statement.
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8.
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Measure DO at least 10 inches below the surface.
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9.
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The
best time to take DO readings is one hour after feeding.
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Completion
Complete each sentence or
statement.
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10.
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The
color of the water or the botoom affects ____________ absorption.
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Matching
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a. | reduces demand
for oxygen | c. | increases | b. | increases demand for oxygen | d. | decreases | | | | |
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11.
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reduce fish population
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12.
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replace old water with new water
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13.
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plant
vegetation
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14.
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remove excess detritus
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15.
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As
temperature increases ammonia ???
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16.
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As pH
increases ammonia ???
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